Bumper control



K. O. SCHAUMAN v BUMPER CONTROL Filed Nov. 25, 1927 3 Sheets-Sheet lINENTOR.

- BWMRNEY l K. o. Sgn-mu/mli` BUMPER CONTROL Filed Nov. 2 5, 1927 v 3sheets-sheet' mll 2 I EN TORI mm om wm m" .u www Nm N mm n mN ocr,9,1928. 1,686,536

K. o. scHAuMAN BUMPER CONTROL Filed Nov. 25; i927 3 Sheets-Sheet 3 @jINVENTOR.

y Patented Got. 9, 1928.

' ment for purposes of illustration, it should be narran etarras meesteI ear aar for Fica.

KARL osTEN SGEAUMAN, "or ASBURY rami, amasar, assiettes To WILLIAMH.

' Y `rivaal/f, or ser; -rnanorsoa canrroanm. v l

. BUMPER,

Application filed November simple construction." The invention furtheraims to provide inconspicuous electrical con-` tact members soassociated with the. bumper that they willbe moved yto complete an elecvtrical circuit whenever the bumper collides with an obstruction.

The bumper includes a bow-sb aped member across which is strungI anetwork of' flexible cables. The electrical cont-acts are controlled byspring-pressed sliding members which move whenever any part of thebumper receives a blow. thereby closing thecontacts and causing theoperation or certain'mecha# msm 'controlling the movement oftheautomobile.

While l have disclosed a preferred embodiunderstood that various changesand modifications in the structure may be *madeV without departing fromthe spirit and scope of the invention as hereinafter set'forth andclaimed.

In the drawings; f Fig. 1 is a top plan view of the bumper; /Figf2 is afront elevation thereof ;Y

Fig. 3l is a cent-'ral vertical. cross section onV the line 3-3 in Fig.2 and in larger scale L Figl is a detail section through one of thespreader members as indicated on the line l-ein Figm;

Fig. 5 is top plan viewof the cable tightening; means located on theright in Fig.' 1,`the metal cover being shown in section z Figt is asimilar view but with cover .re-V moved and showing; the anchor piecerotated to a posit-ion where it can be removed from the bumper; V y yFig. 7 is a vertical section on the line 7-77 of Fig. 5;

Fig. 8 is an end view of Fig. as viewed from the left; y Fig. 9 is atransverse section on the lin-e 9 -90f Fis,- 5.; 1

Figa 10 isl a horizontal sectionpthrough one oi' the switchesasindicatedon the line '10-10 Aon `the line oorrriton.

Ving in section; l l A l Fig. 13 is aperspective view of the adjustableterminal oi' the switch; andv v Fig-11l is a' diagram of' thefront. andrear bumpers with electrical connections to other apparatus. 1 Referringtothe drawings more specifically, the main part of the bumper is thebow-shaped member 10 which is secured by bolts 11 to the channel bar 12,the latter'being secured to the automobile in any 'well-known manner. Anornamental cover 13 isplaced over the parts of the bow member 10 andchannel bar-12 contacting witheach other. 1

'lvhe outer ends of bow member 12 are bent inwardly toward each other toform eXtensions 14 parallel withv the channel bar 10. 1 The in Figs. 10andll the case ofthe switch-bright-hand extension 1411 carries theadjustable cable anchor 18.v The.. anchor 1 8 formed Y with a pair ofheaded lugs 19 extendinginto;

open notches 2O cut into the sides of the bumper. One side ofthe head ofeach of lugs slipped into notch 2O as shown in Fig. jan'd which preventsvdis'engagement of the anchor when in holding' position'as shown in Fig.5.

An anchor member 15 issimilarly'attached tothe left hand entensiony 14and holdstheV looped end .oiI cable loop 16, as shown .in Figs.

1 and 2, the attachment being concealedby an ornamental cover 17having'bayonet. slots 35 engaging the cables as shown i-n Fig. 8.x

rlhe freeen'ds of the cable loopilii `are se cured to the anchor member18 as shown in Figs. 5 and .Z. Each'end of the cable passes into a hole22 'formed in. a-blo'ck' 23. pair 'of' looseV pins 24 having disc ana'es25 and projecting tapered points 26 are loosely mounted in a block 27and situated so as to be directly opposite the holes 22. screw y28vvpasses loosely through block 23andis threadedfinto i block 27, so thatupon'tightening-` up head 29 of the screw, the taperedpins are vjammedinto the ends of the cable :and the flanges -25 `press the cable strandsinto the counterbores 30. thereby iirmly anchoring: the cablel ends toblock 23. rllhe. inner end of screw 28 passes through an opening 31 in alateralflangre- 32 carried byanchorpmember 18 and receives an hillvvadjusting nut 33. ltwill be' clearthat by f. screwing` the adjustingnut downl the block 23 will bemoved toward the right ofFig. 7,

thereby tightening the cable. VThe anchor member 18 is also protected byan ornamental cover 17 which is provided with an opening 34 to permitaccess to the adjustingnut.

jNear each extension -14 the strands ofthe cable loop 16 are held apartby spreadei's 36. As shown in Fig 4 the spreader is a tube niem- `berslotted at its upper endV at 37 to receive. the

upper strand or loop 16, the` right handside `of the slotI beingextended at 38 lto permit the' insertion of the end ot the upper crosscable 39 into the tube. A cap 40 is placed over the end of the spreaderto hold it together and a clamp screw 41 is threaded linto the end ofthe tube to securely grip the cables. Each end of each of thespreadersis Asimilarly rformed.

i The upper cross cable member 39 is anchored in the upper end of eachof the spreaders, and is at-tachedr to the upper strand'o'f loop 16fatspaced points by clips 42 and t-o the lower cross cable-'member 43 byclips 44 atpoints midway between the clips`42. The lower cross l.

. a'oneiiece casing Y48 riveted at 49 Fi 10` Vto a Vsupporting plater50'which has one end hooked over the end oi2 the channel bar 51 and theother end clamped .by the bolt 11.l The sliding arm 47 extends throughopenings inthe casing and within thecasing isprovided on its upper sideAwith a notch 52 which receivesoneend of a spring 53. The oppo# site endof spring '53 is coiled about a stud 54 @atop tra@ piatto.nbinaing'boitea carried by the casing and has its end engaging oneside'of lthe casing toV thereby resilient- 1y press the arm 47 intoContact with the bow member 10. Y. c l

The lower side V'of arm 47 is formed with an elongated notch 55. Anadjustable'normally stationary contact member Ais mounted in the casingfor cooperation with the sliding arm 47. The `main part of thisstationary Contact is a block of liber 55 vhaving a square open-l ing 56receiving a square nut 57, Figs.v 11 and '13, A`An adJusting screw has acounter- :sunk head 59swiveled in the supporting plate 50 and'h'eldagainst longitudinal movement the channel Vbarf12. The screw 58 Aextendsfreely through the block 55,is screwthreaded througl-i the nut 57 andhasits free end kerted and extended through an opening inthe casing. A fber plate 60 is laid over the block 55 and a contact piece 61 is placedpasses through piece 61,V plate 60, block 55", andy liber bushing 63fitting into a slot 64 formed in the lower wall of the casing. Rivets 65hold the contact piece against rotation upon the sliding block; Aresilient arm 66 formed on tliecontact piece has a raised Y headvportion 67 adapted normally to extend into the notch rwithonttouchingthearm 47 as shown in Fig. 11. Thev adjusting screw 58 providesmeans for moving block 55T laterally to place the head 67 iii properrelation to the notch 55. The Ablock is then seu` cured in thispositionby tightening the nut 68, and thel conductor wire 69 lis secured to thebindingbolt 62 and lead to the `positive the battery through appropriateI It will be clearrtrom Figs. 1 and 10 thatV terminal of circuits.

wheneverthe bumper receives an impact the the blow is vreceived inthecable network the sides of the bow will be` pulled 'toward each other,permitting spring 53 to move the bolt forward, while it the blow isreceived by one ot theforward extensions of the bow the correspondingarm 47 will be pushed toward the rear. In either case head 67 willcontact with a side of the notch 55.

Fig. -14 indicates how front and rear y bumpers of the type hereindisclosed can. be

used in the automatic control system disclosed in my copendingapplication Seriall No. 102,402 tiled on April 16, 1926. The channel bar120i each bumper is grounded, and since the sliding arm'47 is invelectrical vcontact withthe channel bar, whenever armA 47 contacts withhead Y6,7, operating circuits of the control system will Vbe completeddepending Aarinf47 will contact Vwith the head 67. It

upon the position of the switch member, as

set forth in said copending applica-tion.V I claim z-f l 1. A controlbumper comprising afbumper member, and a sliding contact arm resilientlypressed into contact with said bumperfm'em` ber. l

2. A control, bumper comprising a bowv c member, cables joining the endsof the bow member, and a sliding contact arm resiliently ber.

channel bar near each end, and a sliding arm cooperating with the switchand resiliently pressed into contact with'the mainv bumper "member,V c Ai 4 Y 4. A control bumper comprising a channel bar, a main bumper memberattached tothe pressed into contact with said bumper mem- 'y 3. Acontrolvbumper confiprisingal channel i bar, a main bumper memberattached to the channel b`ar,ra .switch mounted within the channel bar,a switch casing mounted within the channel bar near eachend, a slidingarm extending into the casing and` contacting with the main bumper`member', a spring c normally pressing the arm toward the bumper member,spacedr contact points formed on theA ysliding arm, andga normallystationaryr contact element having a part'extending between tact elementhaving a part extending between' said contact points therefrom. f a e Y5. A control bumper comprlsmg a channel and normally spaced bar, a mainbumper member attached to the channel bar, a switch Casing mounted onthe channel bar, a sliding arm 'extending into the casing andcont-acting;4 with the main said Contact pointsjand normally spa-ced'therefrom. e

6. A control bumperV comprising, a sup* porting member, a main bumpermember attached to the supporting member, a switch mounted on thesupportngmember, a sliding mfm contacting Wit-h the main bumpermeml berand cooperating with the switch to form` an electrical Contact upon themain bumper member moving either forward or backward.. 1n testlmonf7whereof): ax my slgnature,

KARL osrm` scr-Ijmmsmu.v

